Wonky syntax highlighting when escaping delim-pair characters or inputting some contextually non-delim-pair characters in strings.

[NidusUmbra]

Describe the bug
Syntax highlighting displays the wrong colors when escaping some characters that require it, in strings and also when not closing delim-pairs in a context where that isn't necessary for syntax compliance. Compiling and running the code works just fine, it's only the coloring. It becomes confusing and the colors-errors cascade downward as well until pairs are 'closed' inside a comment (not always feasible).

To Reproduce
Escape a " (i.e. "\"") and succeeding text becomes orange (or whatever the theme has set for strings). Put a { in a string ("{") and the same happens except in block-comment-color. ";" does not have this problem. Now compile.

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[joelday]

@NidusUmbra Does this repro on a pre-3.0.0 version of the extension? I haven't had some time to try that out yet.

[NidusUmbra]

@joelday

I tried it on v2.23.12 and it looks pretty much identical. (Included a related highlighting issue in the function header pertaining to backslash-escape.)

[joelday]

K, I just wanted to rule out a recent change to the syntax highlighter grammar that didn't wind up in the 3.0.1 changelog.